Feedback control method, system, device and equipment

Abstract

The present invention provides a feedback control method, system, device and equipment, the method comprising: generating a first signal through the signal generation module, determining the first quantum bit state output by the quantum chip based on the first signal; when the first quantum bit state does not meet the preset conditions, determining the feedback signal generated by the feedback control device based on the first quantum bit state; adjusting the signal generation module according to the feedback signal, obtaining the second signal generated by the adjusted signal generation module, and determining the second quantum bit state corresponding to the second signal; when the second quantum bit state meets the preset conditions, determining the feedback result according to the first quantum bit state and the second quantum bit state. Through the feedback control process provided by the present invention, the feedback control efficiency of the quantum computing system is improved.

Description

Technical Field

[0001] The present invention relates to the field of quantum computing technology, and in particular to a feedback control method, system, device and equipment. Background Art

[0002] The quantum chip of a quantum computing system has signal paths such as control, reading input, and reading output. In the feedback control experiment of a quantum computing system, the quantum chip can be driven by reading input, and the quantum bit state can be fed back in real time based on the measurement results of the quantum chip output. However, the current feedback control method of a quantum computing system is inefficient and not very real-time. Summary of the invention

[0003] The present invention provides a feedback control method, system, device and equipment to solve the technical problems that the feedback control method of the existing quantum computing system is low in efficiency and low in real time.

[0004] The present invention provides a feedback control method, which is applied to a feedback control system, wherein the feedback control system includes a signal generation module, a feedback control device and a quantum chip; the feedback control method includes:

[0005] Generate a first signal by the signal generation module, and determine a first quantum bit state output by the quantum chip based on the first signal;

[0006] If the first qubit state does not meet a preset condition, determining a feedback signal generated by the feedback control device based on the first qubit state;

[0007] Adjust the signal generation module according to the feedback signal to obtain a second signal generated by the adjusted signal generation module, and determine a second quantum bit state corresponding to the second signal;

[0008] When the second qubit state meets the preset condition, a feedback result is determined according to the first qubit state and the second qubit state.

[0009] According to a feedback control method provided by the present invention, the feedback control system further includes a computing communication device and a clock synchronization trigger device; before the step of generating a first signal by the signal generation module and determining a first quantum bit state output by the quantum chip based on the first signal, the step includes:

[0010] The parameters of the preset quantum system experiment are converted by the computing communication device to obtain instruction parameters;

[0011] Determine a clock trigger signal generated by the clock synchronization trigger device based on the instruction parameters;

[0012] The control instruction, the configuration parameter and the clock trigger signal are sent to the signal generation module and the feedback control device.

[0013] According to a feedback control method provided by the present invention, the step of determining a feedback result according to the first qubit state and the second qubit state comprises:

[0014] Saving the target quantum bit state generated by the quantum chip through the feedback control device;

[0015] When the current target quantum bit state meets the preset conditions, each target quantum bit state is uploaded to the computing communication device to determine the feedback result of the quantum system experiment.

[0016] According to a feedback control method provided by the present invention, the signal generation module includes a multi-channel pulse signal generation module, a multi-channel microwave signal generation module and a multi-channel DC signal generation module; the step of generating a first signal by the signal generation module and determining a first quantum bit state output by the quantum chip based on the first signal includes:

[0017] Generate a target pulse signal, a target microwave signal and a target voltage signal in sequence through the multi-channel pulse signal generating module, the multi-channel microwave signal generating module and the multi-channel DC signal generating module;

[0018] The quantum chip is regulated according to the target pulse signal, the target microwave signal and the target voltage signal to determine a first quantum bit state output by the quantum chip.

[0019] The present invention provides a feedback control system, which includes a signal generation module, a feedback control device and a quantum chip, wherein:

[0020] The signal generation module and the feedback control device are respectively connected to the quantum chip; the signal generation module is connected to the feedback control device;

[0021] The signal generating module is used to generate a first signal;

[0022] The quantum chip is used to output a first quantum bit state corresponding to the first signal;

[0023] The feedback control device is used to read the first qubit state and generate a feedback signal when the first qubit state does not meet a preset condition;

[0024] The signal generating module is further used to generate a second signal corresponding to the feedback signal;

[0025] The quantum chip is also used to output a second quantum bit state corresponding to the second signal;

[0026] The feedback control device is also used to read the second quantum bit state, and when the second quantum bit state meets a preset condition, determine a feedback result according to the first quantum bit state and the second quantum bit state.

[0027] According to a feedback control system provided by the present invention, the feedback control system further includes a computing communication device and a clock synchronization triggering device, wherein:

[0028] The clock synchronization trigger device, the signal generation module, the feedback control device and the quantum chip are respectively connected to the computing and communication device; the signal generation module and the feedback control device are respectively connected to the clock synchronization trigger device;

[0029] The computing and communication device is used to convert the parameters of the preset quantum system experiment into instruction parameters;

[0030] The computing and communication device is also used to send the instruction parameters to the clock synchronization trigger device, the signal generation module and the feedback control device;

[0031] The clock synchronization trigger device is used to generate a clock trigger signal corresponding to the instruction parameter, and send the clock trigger signal to the signal generation module and the feedback control device.

[0032] According to a feedback control system provided by the present invention, the feedback control device includes a processing module, a network interface, an analog-to-digital converter, a feedback interface and a clock synchronization module, wherein:

[0033] The processing module is used to configure the analog-to-digital converter and read the target quantum bit state output by the quantum chip;

[0034] The network interface is used to connect to the computing and communication device;

[0035] The analog-to-digital converter is used to receive the target quantum bit state;

[0036] The feedback interface is used to output a feedback signal to the signal generating module;

[0037] The clock synchronization module is used to perform phase-locked frequency division operations on the clock sent by the clock synchronization trigger device to obtain a working reference clock, and send the working reference clock to the processing module and the analog-to-digital converter.

[0038] The present invention also provides a feedback control device, comprising:

[0039] A first signal generating module, configured to generate a first signal through the signal generating module, and determine a first quantum bit state output by the quantum chip based on the first signal;

[0040] A feedback signal generating module, used for determining a feedback signal generated by a feedback control device based on the first qubit state when the first qubit state does not meet a preset condition;

[0041] A second qubit state determination module, configured to adjust the signal generation module according to the feedback signal, obtain a second signal generated by the adjusted signal generation module, and determine a second qubit state corresponding to the second signal;

[0042] A feedback result determination module is used to determine a feedback result according to the first quantum bit state and the second quantum bit state when the second quantum bit state meets the preset condition.

[0043] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, any of the feedback control methods described above is implemented.

[0044] The feedback control method, system, device and equipment provided by the present invention are applied to a feedback control system including a signal generation module, a feedback control device and a quantum chip, wherein a first signal is generated by the signal generation module, and then a first quantum bit state output by the quantum chip based on the first signal is determined, and when the first quantum bit state does not meet the preset conditions, a feedback signal generated by the feedback control device based on the first quantum bit state is determined, and the feedback signal is sent to the signal generation module, and the signal generation module is adjusted according to the feedback signal to obtain a second signal generated by the adjusted signal generation module, and then a second quantum bit state output by the quantum chip based on the second signal is determined, and when the second quantum bit state meets the preset conditions, a feedback result consisting of the first quantum bit state and the second quantum bit state is determined. Through the feedback control process provided by the present invention, the feedback control efficiency of the quantum computing system is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Description of reference numerals:

[0047] Label name Label name 10 Feedback control system 800 Quantum chips 100 Computer equipment 710 Processing Module 200 router 720 Network Interface 300 Clock synchronization trigger device 730 Analog-to-digital converter 400 Multi-channel pulse signal generation module 740 Feedback interface 500 Multi-channel DC signal generation module 750 Power Module 600 Multi-channel microwave signal generation module 760 Clock synchronization module 700 Feedback control equipment

[0048] Figure 1 It is one of the flow charts of the feedback control method provided by the present invention;

[0049] Figure 2 This is the second flow chart of the feedback control method provided by the present invention;

[0050] Figure 3 It is a schematic diagram of the connection of each module device of the feedback control system provided by the present invention;

[0051] Figure 4 It is a schematic diagram of the connection of various modules of the feedback control device provided by the present invention;

[0052] Figure 5 is a structural schematic diagram of the feedback control device provided by the present invention;

[0053] Figure 6 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Combine the following Figure 1-Figure 2 The feedback control method of the present invention is described.

[0056] Please refer to Figure 1 The present invention provides a feedback control method, which is applied to a feedback control system. The feedback control system includes a signal generation module, a feedback control device and a quantum chip. The feedback control method includes:

[0057] Step 100, generating a first signal by the signal generation module, and determining a first quantum bit state output by the quantum chip based on the first signal;

[0058] Specifically, the feedback control method provided by the present invention is applied to a feedback control system including a signal generating module, a feedback control device and a quantum chip, wherein the signal generating module generates a first signal, and the first signal generated by the signal generating module is input into the quantum chip, thereby determining the first quantum bit state output by the quantum chip after receiving the first signal.

[0059] Step 200, when the first qubit state does not meet a preset condition, determining a feedback signal generated by the feedback control device based on the first qubit state;

[0060] Specifically, the feedback control device integrates a multi-channel quantum bit reading and detection function. The feedback control device reads the first quantum bit state output by the quantum chip. When the first quantum bit state does not meet expectations (i.e., the preset conditions in this embodiment), a feedback signal generated based on the first quantum bit state is provided to the signal generation module through a cable, so that the signal generation module generates the quantum bit state again based on the feedback signal.

[0061] Step 300, adjusting the signal generation module according to the feedback signal to obtain a second signal generated by the adjusted signal generation module, and determining a second quantum bit state corresponding to the second signal;

[0062] Specifically, after the signal generating module receives the feedback signal provided by the feedback control device, the signal generating module adjusts the amplitude, period, phase and other information of the output signal of the signal generating module based on the feedback signal. The adjusted signal generating module generates a second signal again, and inputs the second signal to the quantum chip. After receiving the second signal, the quantum chip outputs the quantum bit state again. It can be understood that if the quantum bit state output by the quantum chip again (i.e., the second quantum bit state in this embodiment) still does not meet expectations, the above process will continue to be repeated until the quantum bit state output by the quantum chip meets expectations.

[0063] Step 400: When the second quantum bit state meets the preset condition, determine a feedback result according to the first quantum bit state and the second quantum bit state.

[0064] Specifically, the feedback control device determines whether the quantum bit state output by the quantum chip meets expectations. If the quantum bit state output by the quantum chip does not meet expectations, the above process is repeated. If the second quantum bit state output by the quantum chip meets expectations, the second quantum bit state and the quantum bit states output by the previous quantum chip that do not meet expectations are saved in the feedback control device as experimental data of the quantum computing system to obtain the experimental feedback results of the quantum computing system.

[0065] This embodiment generates a first signal through a signal generation module, and then determines the first qubit state output by the quantum chip based on the first signal. When the first qubit state does not meet the preset conditions, the feedback signal generated by the feedback control device based on the first qubit state is determined, and the feedback signal is sent to the signal generation module. The signal generation module is adjusted according to the feedback signal to obtain the second signal generated by the adjusted signal generation module, and then the second qubit state output by the quantum chip based on the second signal is determined. When the second qubit state meets the preset conditions, the feedback result composed of the first qubit state and the second qubit state is determined. Through the feedback control process provided by the present invention, the feedback control efficiency of the quantum computing system is improved.

[0066] Please refer to Figure 2 In one embodiment, the feedback control method provided by the embodiment of the present application, the feedback control system further includes a computing communication device and a clock synchronization trigger device; the feedback control method may also include:

[0067] Step 10, converting the preset parameters of the quantum system experiment through the computing communication device to obtain instruction parameters;

[0068] Step 20, determining a clock trigger signal generated by the clock synchronization trigger device based on the instruction parameters;

[0069] Step 30: Send the control instruction, the configuration parameter and the clock trigger signal to the signal generation module and the feedback control device.

[0070] Specifically, the feedback control system also includes a computing communication device and a clock synchronization trigger device. The computing communication device includes a computer device and a router. The computer device is used to convert the parameters of the preset quantum system experiment into control instructions and configuration parameters, that is, the instruction parameters in this embodiment, and send the converted instruction parameters to the above-mentioned signal generation module, feedback control device and quantum chip; the computer device communicates with the above-mentioned signal generation module and feedback control device through Ethernet through the router; the clock synchronization trigger device provides clock and trigger signals to the signal generation module and feedback control device. The above-mentioned signal generation module, feedback control device and quantum chip can perform their respective operations based on the instruction parameters. For example, the quantum chip outputs the quantum bit state based on the signal generated by the signal generation module.

[0071] This embodiment realizes the initialization of each device module in the feedback control system by converting experimental parameters and providing clock and trigger signals.

[0072] In one embodiment, the feedback control method provided in the embodiment of the present application may further include:

[0073] Step 410, saving the target quantum bit state generated by the quantum chip through the feedback control device;

[0074] Step 420, when the current target quantum bit state meets the preset conditions, upload each of the target quantum bit states to the computing communication device to determine the feedback result of the quantum system experiment.

[0075] Specifically, the feedback control device determines whether the quantum bit state output by the quantum chip meets expectations. If the quantum bit state output by the quantum chip does not meet expectations, the process of the above-mentioned step 200 embodiment is looped. If the quantum bit state output by the quantum chip meets expectations, the quantum bit state that meets expectations and the quantum bit states of the quantum chip that do not meet expectations and are previously collected and stored in the feedback control device (i.e., the target quantum bit states in this embodiment) are used as experimental data of the quantum computing system. Then, the experimental feedback results of the quantum computing system are obtained and uploaded to the computing communication device through a router to determine the feedback results of the quantum system experiment.

[0076] This embodiment improves the feedback control efficiency of the quantum computing system through the feedback control process provided by the present invention.

[0077] In one embodiment, the feedback control method provided by the embodiment of the present application, the signal generation module includes a multi-channel pulse signal generation module, a multi-channel microwave signal generation module and a multi-channel DC signal generation module; the feedback control method may also include:

[0078] Step 110, sequentially generating a target pulse signal, a target microwave signal and a target voltage signal through the multi-channel pulse signal generating module, the multi-channel microwave signal generating module and the multi-channel DC signal generating module;

[0079] Step 120: regulating the quantum chip according to the target pulse signal, the target microwave signal, and the target voltage signal to determine a first quantum bit state output by the quantum chip.

[0080] Specifically, the signal generation module in this embodiment includes a multi-channel pulse signal generation module, a multi-channel microwave signal generation module and a multi-channel DC signal generation module, wherein the multi-channel pulse signal generation module generates a target pulse signal, and the target pulse signal regulates the Z line of the quantum chip; the multi-channel microwave signal generation module generates a target microwave signal, and the target microwave signal regulates the XY line of the quantum chip; the multi-channel DC signal generation module provides a bias voltage (i.e., the target voltage signal in this embodiment) to the Z line of the quantum chip. Each signal generated by each signal generation module is input into the quantum chip, thereby determining the first quantum bit state output by the quantum chip after receiving each signal.

[0081] This embodiment inputs each signal generated by each signal generation module into the quantum chip to obtain the quantum bit state output by the quantum chip, thereby realizing full-process closed-loop feedback of the quantum system experimental process.

[0082] Please refer to Figure 3 The present invention also provides a feedback control system 10, which includes a signal generation module, a feedback control device 700 and a quantum chip 800, wherein: the signal generation module and the feedback control device 700 are respectively connected to the quantum chip 800; the signal generation module is connected to the feedback control device 700; the signal generation module is used to generate a first signal; the quantum chip 800 is used to output a first quantum bit state corresponding to the first signal; the feedback control device 700 is used to read the first quantum bit state, and generate a feedback signal when the first quantum bit state does not meet the preset conditions; the signal generation module is also used to generate a second signal corresponding to the feedback signal; the quantum chip 800 is also used to output a second quantum bit state corresponding to the second signal; the feedback control device 700 is also used to read the second quantum bit state, and when the second quantum bit state meets the preset conditions, determine the feedback result according to the first quantum bit state and the second quantum bit state.

[0083] Specifically, the connection relationship between the various devices and modules included in the feedback control system is as follows: Figure 3 As shown, the signal generation module in this embodiment includes Figure 3 The multi-channel pulse signal generation module, multi-channel DC signal generation module and multi-channel microwave signal generation module in the multi-channel pulse signal generation module. The pulse signal, DC signal and microwave signal outputted by the multi-channel pulse signal generation module, the multi-channel microwave signal generation module and the multi-channel DC signal generation module are all analog signals, and the read output signal of the input feedback control device is also an analog signal. The feedback signal outputted by the feedback control device is a digital signal, which adopts a digital signal method including but not limited to LVTTL (Low Voltage Transistor-Transistor Logic) or LVCMOS (Low Voltage Complementary Metal Oxide Semiconductor) level standards. Quantum chip refers to a core component that makes full use of quantum mechanical effects to realize high-efficiency parallel quantum computing. The multi-channel pulse signal generation module, multi-channel microwave signal generation module, multi-channel DC signal generation module and feedback control device included in the quantum feedback control system can be one or more.

[0084] In one embodiment, the feedback control system 10 provided in the embodiment of the present application further comprises a computing communication device and a clock synchronization trigger device 300, wherein: the clock synchronization trigger device 300, the signal generation module, the feedback control device 700 and the quantum chip 800 are respectively connected to the computing communication device; the signal generation module and the feedback control device 700 are respectively connected to the clock synchronization trigger device 300; the computing communication device is used to convert the parameters of the preset quantum system experiment into instruction parameters; the computing communication device is also used to send the instruction parameters to the clock synchronization trigger device 300, the signal generation module and the feedback control device 700; the clock synchronization trigger device 300 is used to generate a clock trigger signal corresponding to the instruction parameters, and send the clock trigger signal to the signal generation module and the feedback control device 700.

[0085] Specifically, the computing and communication device in this embodiment includes: Figure 3 The computer equipment and router in the feedback control system include a central processing unit, memory and Ethernet interface card. The operating system of the computer equipment includes necessary drivers, operation interfaces and development environments. Through the router, the computer equipment communicates with other devices (modules) in the feedback control system through Ethernet. The operating system of the computer equipment involves experimental parameters of the quantum computing system. The computer equipment converts the experimental parameters of the quantum computing system into control instructions and configuration parameters of other devices (modules) in the feedback control system, and then sends them to other devices (modules) in the feedback control system. The clock synchronization trigger device provides clock and trigger signals to the multi-channel pulse signal generation module, the multi-channel microwave signal generation module, the multi-channel DC signal generation module and the feedback control device.

[0086] Please refer to Figure 4 In one embodiment, the feedback control system 10 provided by the embodiment of the present application, the feedback control device 700 includes a processing module 710, a network interface 720, an analog-to-digital converter 730, a feedback interface 740 and a clock synchronization module 760, wherein: the processing module 710 is used to configure the analog-to-digital converter 730 and read the target quantum bit state output by the quantum chip 800; the network interface 720 is used to connect the computing communication device; the analog-to-digital converter 730 is used to receive the target quantum bit state; the feedback interface 740 is used to output a feedback signal to the signal generation module; the clock synchronization module 760 is used to perform phase-locked frequency division operation on the clock sent by the clock synchronization trigger device 300 to obtain a working reference clock, and send the working reference clock to the processing module 710 and the analog-to-digital converter 730.

[0087] Specifically, the analog-to-digital converter is used to convert the read output signal of the quantum chip from an analog signal into a digital signal; the power supply module is used to convert the external input power supply into various power supplies required by each module in the feedback control device; the clock synchronization module is used to generate the sampling clock required by the analog-to-digital converter and the reference clock required by the processing module after frequency multiplication and phase locking of the reference clock distributed by the clock synchronization trigger device; the network interface is used to interconnect with the equipment outside the feedback control device through Ethernet; the feedback interface is the output port of the feedback signal; the processing module is implemented with a large-scale programmable logic gate array with high real-time performance, and the processing module realizes four functions of spectrum analysis, feedback control, network communication and clock management; spectrum analysis is used to perform Fourier transform on the digital signal output by the analog-to-digital converter into a spectrum result; feedback control outputs a feedback signal according to the spectrum result; network communication is used for communication between the feedback control device and the computer equipment; clock management is used to convert the reference clock into the required logic clock after frequency synthesis and other processing.

[0088] The processing module is implemented using FPGA (Field Programmable Gate Array). Compared with other processors, FPGA has advantages in parallel processing and low delay from data input to result output. The analog-to-digital converter is implemented using a high-sampling rate ADC (analog to digital converter) chip with a parallel output interface. The configuration of the analog-to-digital converter is completed by the processing module, and the output data is sent to the processing module through the parallel output interface. The power module is implemented by multiple multi-channel DC-DC converters. The feedback control device implemented by the above scheme can use the low delay of the parallel output ADC chip and the high-speed calculation of the FPGA on the processing data to directly output the feedback signal, which can minimize the delay from the analog input of the feedback control device to the feedback signal output, and achieve a delay of hundreds of nanoseconds, thereby realizing real-time feedback of the feedback control system.

[0089] The feedback control device provided by the present invention is described below. The feedback control device described below and the feedback control method described above can be referenced to each other.

[0090] Please refer to Figure 5 The present invention also provides a feedback control device, comprising:

[0091] A first signal generating module 501, configured to generate a first signal through the signal generating module, and determine a first quantum bit state output by the quantum chip based on the first signal;

[0092] A feedback signal generating module 502, configured to determine a feedback signal generated by a feedback control device based on the first qubit state when the first qubit state does not meet a preset condition;

[0093] A second qubit state determination module 503, configured to adjust the signal generation module according to the feedback signal, obtain a second signal generated by the adjusted signal generation module, and determine a second qubit state corresponding to the second signal;

[0094] The feedback result determination module 504 is used to determine the feedback result according to the first quantum bit state and the second quantum bit state when the second quantum bit state meets the preset condition.

[0095] Optionally, the feedback control system further includes a computing communication device and a clock synchronization triggering device; the feedback control device further includes:

[0096] An instruction parameter determination module, used to convert the parameters of the preset quantum system experiment through the computing communication device to obtain instruction parameters;

[0097] A clock trigger signal generating module, used to determine the clock trigger signal generated by the clock synchronization trigger device based on the instruction parameters;

[0098] A sending module is used to send the control instruction, the configuration parameter and the clock trigger signal to the signal generating module and the feedback control device.

[0099] Optionally, the feedback result determination module includes:

[0100] A target quantum bit state storage unit, used to store the target quantum bit state generated by the quantum chip through the feedback control device;

[0101] A feedback result determination unit is used to upload each target quantum bit state to the computing communication device when the current target quantum bit state meets the preset conditions, and determine the feedback result of the quantum system experiment.

[0102] Optionally, the signal generating module includes a multi-channel pulse signal generating module, a multi-channel microwave signal generating module and a multi-channel DC signal generating module; the first signal generating module includes:

[0103] A signal generating unit, configured to sequentially generate a target pulse signal, a target microwave signal and a target voltage signal through the multi-channel pulse signal generating module, the multi-channel microwave signal generating module and the multi-channel DC signal generating module;

[0104] A first quantum bit state determination unit is used to control the quantum chip according to the target pulse signal, the target microwave signal and the target voltage signal to determine a first quantum bit state output by the quantum chip.

[0105] Figure 6 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 6 As shown, the electronic device may include: a processor 610, a communication interface 620, a memory 630 and a communication bus 640, wherein the processor 610, the communication interface 620 and the memory 630 communicate with each other through the communication bus 640. The processor 610 may call the logic instructions in the memory 630 to execute the feedback control method.

[0106] In addition, the logic instructions in the memory 630 can be implemented in the form of software functional units. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution can be embodied in the form of a software product.

[0107] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0108] Through the description of the above implementations, those skilled in the art can clearly understand that each implementation can be implemented by means of software plus a necessary general hardware platform, or of course by hardware. Based on this understanding, the above technical solution, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A feedback control method, characterized in that: The feedback control method is applied to a feedback control system, which includes a signal generation module, a feedback control device and a quantum chip; the feedback control method includes: Generate a first signal by the signal generation module, and determine a first quantum bit state output by the quantum chip based on the first signal; If the first qubit state does not meet a preset condition, determining a feedback signal generated by the feedback control device based on the first qubit state; Adjust the signal generation module according to the feedback signal to obtain a second signal generated by the adjusted signal generation module, and determine a second quantum bit state corresponding to the second signal; When the second qubit state meets the preset condition, determining a feedback result according to the first qubit state and the second qubit state; The signal generation module includes a multi-channel pulse signal generation module, a multi-channel microwave signal generation module and a multi-channel DC signal generation module; the step of generating a first signal by the signal generation module and determining a first quantum bit state output by the quantum chip based on the first signal includes: The target pulse signal, the target microwave signal and the target voltage signal are sequentially generated by the multi-channel pulse signal generating module, the multi-channel microwave signal generating module and the multi-channel DC signal generating module; the target pulse signal regulates the Z line of the quantum chip; the target microwave signal regulates the XY line of the quantum chip; the target voltage signal is used to provide a bias voltage to the Z line of the quantum chip; The quantum chip is regulated according to the target pulse signal, the target microwave signal and the target voltage signal to determine a first quantum bit state output by the quantum chip.

2. The feedback control method according to claim 1, characterized in that: The feedback control system further includes a computing communication device and a clock synchronization trigger device; the step of generating a first signal by the signal generation module and determining a first quantum bit state output by the quantum chip based on the first signal includes: The parameters of the preset quantum system experiment are converted by the computing communication device to obtain instruction parameters; Determine a clock trigger signal generated by the clock synchronization trigger device based on the instruction parameters; The control instructions, configuration parameters and the clock trigger signal are sent to the signal generation module and the feedback control device.

3. The feedback control method according to claim 2, characterized in that: The step of determining a feedback result according to the first quantum bit state and the second quantum bit state comprises: Saving the target quantum bit state generated by the quantum chip through the feedback control device; When the current target quantum bit state meets the preset conditions, each target quantum bit state is uploaded to the computing communication device to determine the feedback result of the quantum system experiment.

4. A feedback control system, characterized in that: The feedback control system includes a signal generation module, a feedback control device and a quantum chip, wherein: The signal generation module and the feedback control device are respectively connected to the quantum chip; the signal generation module is connected to the feedback control device; The signal generating module is used to generate a first signal; The quantum chip is used to output a first quantum bit state corresponding to the first signal; The feedback control device is used to read the first qubit state and generate a feedback signal when the first qubit state does not meet a preset condition; The signal generating module is further used to generate a second signal corresponding to the feedback signal; The quantum chip is also used to output a second quantum bit state corresponding to the second signal; The feedback control device is further used to read the second qubit state, and when the second qubit state meets a preset condition, determine a feedback result according to the first qubit state and the second qubit state; The signal generation module includes a multi-channel pulse signal generation module, a multi-channel microwave signal generation module and a multi-channel DC signal generation module; The target pulse signal, the target microwave signal and the target voltage signal are generated in sequence by the multi-channel pulse signal generating module, the multi-channel microwave signal generating module and the multi-channel DC signal generating module; the target pulse signal regulates the Z line of the quantum chip; the target microwave signal regulates the XY line of the quantum chip; the target voltage signal is used to provide a bias voltage to the Z line of the quantum chip.

5. The feedback control system according to claim 4, characterized in that: The feedback control system further comprises a computing communication device and a clock synchronization triggering device, wherein: The clock synchronization trigger device, the signal generation module, the feedback control device and the quantum chip are respectively connected to the computing and communication device; the signal generation module and the feedback control device are respectively connected to the clock synchronization trigger device; The computing and communication device is used to convert the parameters of the preset quantum system experiment into instruction parameters; The computing and communication device is also used to send the instruction parameters to the clock synchronization trigger device, the signal generation module and the feedback control device; The clock synchronization trigger device is used to generate a clock trigger signal corresponding to the instruction parameter, and send the clock trigger signal to the signal generation module and the feedback control device.

6. The feedback control system according to claim 5, characterized in that: The feedback control device comprises a processing module, a network interface, an analog-to-digital converter, a feedback interface and a clock synchronization module, wherein: The processing module is used to configure the analog-to-digital converter and read the target quantum bit state output by the quantum chip; The network interface is used to connect to the computing and communication device; The analog-to-digital converter is used to receive the target quantum bit state; The feedback interface is used to output a feedback signal to the signal generating module; The clock synchronization module is used to perform phase-locked frequency division operations on the clock sent by the clock synchronization trigger device to obtain a working reference clock, and send the working reference clock to the processing module and the analog-to-digital converter.

7. A feedback control device, characterized in that: include: A first signal generating module, configured to generate a first signal through the signal generating module, and determine a first quantum bit state output by the quantum chip based on the first signal; A feedback signal generating module, used for determining a feedback signal generated by a feedback control device based on the first qubit state when the first qubit state does not meet a preset condition; A second qubit state determination module, configured to adjust the signal generation module according to the feedback signal, obtain a second signal generated by the adjusted signal generation module, and determine a second qubit state corresponding to the second signal; A feedback result determination module, configured to determine a feedback result according to the first qubit state and the second qubit state when the second qubit state meets the preset condition; The signal generation module includes a multi-channel pulse signal generation module, a multi-channel microwave signal generation module and a multi-channel DC signal generation module; the first signal generation module is also used for: The target pulse signal, the target microwave signal and the target voltage signal are sequentially generated by the multi-channel pulse signal generating module, the multi-channel microwave signal generating module and the multi-channel DC signal generating module; the target pulse signal controls the Z line of the quantum chip; the target microwave signal controls the XY line of the quantum chip; The target voltage signal is used to provide a bias voltage to the Z line of the quantum chip; The quantum chip is regulated according to the target pulse signal, the target microwave signal and the target voltage signal to determine a first quantum bit state output by the quantum chip.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the feedback control method according to any one of claims 1 to 3 is implemented.

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